While driving through Mementos, the Morgana Car suddenly loses control! The Phantom Thieves stumble through a mysterious space and find themselves in an unknown, strange city filled with opponents they've never seen before. They barely escape with their lives by fleeing into a movie theater—with no exit. Inside this theater, they meet Nagi, a genteel woman with elegant clothes, and Hikari, a quiet and reserved girl, who inform the team that they emerged from the movie screen. It is within the labyrinthine confines of this movie world that other Persona wielders are seemingly guided into meeting one another. Will the Phantom Thieves ever be able to escape the theater?